Counterflow horizontal, right side down - drain setup

What is going on

Drain trap and hose setup for a counterflow furnace laid on its right side. Needs at least 5.5 in clearance under the trap.

Check in this order

1. Keep at least 5.5 in clearance beneath the drain trap.
2. Use the factory hoses where needed; remove the clamps to free them.
3. Remove the drain trap and the factory drain tube assemblies.
4. Remove two 1 in plugs from the right cabinet side.
5. Drain the collector box from outside the cabinet, feed the non-grommet end of hose #7 through the back drain hole and clamp it to the collector drain port with a silver clamp.
6. Drain the vent elbow insert the straight barbed coupling into the vent-drain elbow drip leg and secure with a red clamp.
7. From outside the cabinet, feed the non-grommet end of hose #8 through the front cabinet drain hole and clamp it to the vent-drain elbow barb with a red clamp.
8. Secure the trap to the furnace with the two sheet metal screws supplied in the cabinet.
9. Connect the field drain to the trap outlet per the field drain section.

More furnace guides

• Airflow lower than demanded, furnace runs on low stage when high stage is expected
• Alternate combustion air opening (upflow or horizontal)
• Alternate vent/flue location (upflow or horizontal left)
• Annual inspection checklist
• Auxiliary limit control (location and purpose)
• Auxiliary limit switch open (blower compartment)